<title>字符串的展开</title><link href="http://hzoi.com/tomorrow.css" rel="stylesheet"><div class="ui existing segment"><pre><code><span class="pl-cp">#include</span><span class="pl-cpf">&lt;cstdio&gt;</span><span class="pl-cp"></span>
<span class="pl-cp">#include</span><span class="pl-cpf">&lt;cstdlib&gt;</span><span class="pl-cp"></span>
<span class="pl-kt">char</span> <span class="pl-nf">up</span><span class="pl-p">(</span><span class="pl-kt">char</span> <span class="pl-n">a</span><span class="pl-p">){</span>
        <span class="pl-k">if</span><span class="pl-p">(</span><span class="pl-n">a</span><span class="pl-o">&gt;=</span><span class="pl-sc">&#39;a&#39;</span> <span class="pl-n">and</span> <span class="pl-n">a</span><span class="pl-o">&lt;=</span><span class="pl-sc">&#39;z&#39;</span><span class="pl-p">)</span><span class="pl-k">return</span> <span class="pl-n">a</span><span class="pl-o">-</span><span class="pl-mi">32</span><span class="pl-p">;</span>
        <span class="pl-k">else</span> <span class="pl-k">return</span> <span class="pl-n">a</span><span class="pl-p">;</span>
<span class="pl-p">}</span>
<span class="pl-kt">char</span> <span class="pl-nf">lo</span><span class="pl-p">(</span><span class="pl-kt">char</span> <span class="pl-n">a</span><span class="pl-p">){</span>
        <span class="pl-k">if</span><span class="pl-p">(</span><span class="pl-n">a</span><span class="pl-o">&gt;=</span><span class="pl-sc">&#39;A&#39;</span> <span class="pl-n">and</span> <span class="pl-n">a</span><span class="pl-o">&lt;=</span><span class="pl-sc">&#39;Z&#39;</span><span class="pl-p">)</span><span class="pl-k">return</span> <span class="pl-n">a</span><span class="pl-o">+</span><span class="pl-mi">32</span><span class="pl-p">;</span>
        <span class="pl-k">else</span> <span class="pl-k">return</span> <span class="pl-n">a</span><span class="pl-p">;</span>
<span class="pl-p">}</span>
<span class="pl-kt">int</span> <span class="pl-nf">main</span><span class="pl-p">(){</span>
        <span class="pl-kt">int</span> <span class="pl-n">p1</span><span class="pl-p">,</span><span class="pl-n">p2</span><span class="pl-p">,</span><span class="pl-n">p3</span><span class="pl-p">;</span>
        <span class="pl-kt">char</span> <span class="pl-n">s</span><span class="pl-p">[</span><span class="pl-mi">105</span><span class="pl-p">]</span><span class="pl-o">=</span><span class="pl-p">{</span><span class="pl-mi">0</span><span class="pl-p">};</span>
        <span class="pl-n">scanf</span><span class="pl-p">(</span><span class="pl-s">&quot;%d %d %d&quot;</span><span class="pl-p">,</span><span class="pl-o">&amp;</span><span class="pl-n">p1</span><span class="pl-p">,</span><span class="pl-o">&amp;</span><span class="pl-n">p2</span><span class="pl-p">,</span><span class="pl-o">&amp;</span><span class="pl-n">p3</span><span class="pl-p">);</span>
        <span class="pl-n">scanf</span><span class="pl-p">(</span><span class="pl-s">&quot;%s&quot;</span><span class="pl-p">,</span><span class="pl-n">s</span><span class="pl-p">);</span>
	<span class="pl-n">system</span><span class="pl-p">(</span><span class="pl-s">&quot;echo 1&gt;in&quot;</span><span class="pl-p">);</span>
        <span class="pl-k">for</span><span class="pl-p">(</span><span class="pl-kt">int</span> <span class="pl-n">i</span><span class="pl-o">=</span><span class="pl-mi">0</span><span class="pl-p">;</span><span class="pl-n">i</span><span class="pl-o">&lt;</span><span class="pl-mi">105</span><span class="pl-p">;</span><span class="pl-n">i</span><span class="pl-o">++</span><span class="pl-p">){</span>
                <span class="pl-k">if</span><span class="pl-p">(</span><span class="pl-o">!</span><span class="pl-n">s</span><span class="pl-p">[</span><span class="pl-n">i</span><span class="pl-p">])</span><span class="pl-k">break</span><span class="pl-p">;</span>
                <span class="pl-kt">char</span> <span class="pl-n">begin</span><span class="pl-o">=</span><span class="pl-n">s</span><span class="pl-p">[</span><span class="pl-n">i</span><span class="pl-o">-</span><span class="pl-mi">1</span><span class="pl-p">],</span><span class="pl-n">end</span><span class="pl-o">=</span><span class="pl-n">s</span><span class="pl-p">[</span><span class="pl-n">i</span><span class="pl-o">+</span><span class="pl-mi">1</span><span class="pl-p">];</span>
                <span class="pl-k">if</span><span class="pl-p">(</span><span class="pl-n">s</span><span class="pl-p">[</span><span class="pl-n">i</span><span class="pl-p">]</span><span class="pl-o">!=</span><span class="pl-sc">&#39;-&#39;</span> <span class="pl-o">||</span> <span class="pl-n">begin</span><span class="pl-o">&gt;=</span><span class="pl-n">end</span> <span class="pl-o">||</span> <span class="pl-o">!</span><span class="pl-p">(</span><span class="pl-n">lo</span><span class="pl-p">(</span><span class="pl-n">begin</span><span class="pl-p">)</span><span class="pl-o">&gt;=</span><span class="pl-sc">&#39;a&#39;</span> <span class="pl-o">&amp;&amp;</span> <span class="pl-n">lo</span><span class="pl-p">(</span><span class="pl-n">end</span><span class="pl-p">)</span><span class="pl-o">&lt;=</span><span class="pl-sc">&#39;z&#39;</span> <span class="pl-o">||</span> <span class="pl-n">lo</span><span class="pl-p">(</span><span class="pl-n">begin</span><span class="pl-p">)</span><span class="pl-o">&gt;=</span><span class="pl-sc">&#39;0&#39;</span> <span class="pl-o">&amp;&amp;</span> <span class="pl-n">lo</span><span class="pl-p">(</span><span class="pl-n">end</span><span class="pl-p">)</span><span class="pl-o">&lt;=</span><span class="pl-sc">&#39;9&#39;</span><span class="pl-p">)){</span>
                        <span class="pl-n">printf</span><span class="pl-p">(</span><span class="pl-s">&quot;%c&quot;</span><span class="pl-p">,</span><span class="pl-n">s</span><span class="pl-p">[</span><span class="pl-n">i</span><span class="pl-p">]);</span>
                        <span class="pl-k">continue</span><span class="pl-p">;</span>
                <span class="pl-p">}</span>
                <span class="pl-kt">char</span> <span class="pl-n">z</span><span class="pl-p">[</span><span class="pl-mi">1000</span><span class="pl-p">]</span><span class="pl-o">=</span><span class="pl-p">{</span><span class="pl-mi">0</span><span class="pl-p">};</span>
                <span class="pl-kt">int</span> <span class="pl-n">zi</span><span class="pl-o">=</span><span class="pl-mi">0</span><span class="pl-p">;</span>
                <span class="pl-k">for</span><span class="pl-p">(</span><span class="pl-kt">int</span> <span class="pl-n">j</span><span class="pl-o">=</span><span class="pl-n">begin</span><span class="pl-o">+</span><span class="pl-mi">1</span><span class="pl-p">;</span><span class="pl-n">j</span><span class="pl-o">&lt;=</span><span class="pl-n">end</span><span class="pl-o">-</span><span class="pl-mi">1</span><span class="pl-p">;</span><span class="pl-n">j</span><span class="pl-o">++</span><span class="pl-p">){</span>
                        <span class="pl-k">if</span><span class="pl-p">(</span><span class="pl-n">p1</span><span class="pl-o">==</span><span class="pl-mi">1</span><span class="pl-p">)</span><span class="pl-k">for</span><span class="pl-p">(</span><span class="pl-kt">int</span> <span class="pl-n">k</span><span class="pl-o">=</span><span class="pl-mi">0</span><span class="pl-p">;</span><span class="pl-n">k</span><span class="pl-o">&lt;</span><span class="pl-n">p2</span><span class="pl-p">;</span><span class="pl-n">k</span><span class="pl-o">++</span><span class="pl-p">)</span><span class="pl-n">z</span><span class="pl-p">[</span><span class="pl-n">zi</span><span class="pl-o">++</span><span class="pl-p">]</span><span class="pl-o">=</span><span class="pl-n">lo</span><span class="pl-p">(</span><span class="pl-n">j</span><span class="pl-p">);</span>
                        <span class="pl-k">else</span> <span class="pl-k">if</span><span class="pl-p">(</span><span class="pl-n">p1</span><span class="pl-o">==</span><span class="pl-mi">2</span><span class="pl-p">)</span><span class="pl-k">for</span><span class="pl-p">(</span><span class="pl-kt">int</span> <span class="pl-n">k</span><span class="pl-o">=</span><span class="pl-mi">0</span><span class="pl-p">;</span><span class="pl-n">k</span><span class="pl-o">&lt;</span><span class="pl-n">p2</span><span class="pl-p">;</span><span class="pl-n">k</span><span class="pl-o">++</span><span class="pl-p">)</span><span class="pl-n">z</span><span class="pl-p">[</span><span class="pl-n">zi</span><span class="pl-o">++</span><span class="pl-p">]</span><span class="pl-o">=</span><span class="pl-n">up</span><span class="pl-p">(</span><span class="pl-n">j</span><span class="pl-p">);</span>
                        <span class="pl-k">else</span> <span class="pl-k">if</span><span class="pl-p">(</span><span class="pl-n">p1</span><span class="pl-o">==</span><span class="pl-mi">3</span><span class="pl-p">)</span><span class="pl-k">for</span><span class="pl-p">(</span><span class="pl-kt">int</span> <span class="pl-n">k</span><span class="pl-o">=</span><span class="pl-mi">0</span><span class="pl-p">;</span><span class="pl-n">k</span><span class="pl-o">&lt;</span><span class="pl-n">p2</span><span class="pl-p">;</span><span class="pl-n">k</span><span class="pl-o">++</span><span class="pl-p">)</span><span class="pl-n">z</span><span class="pl-p">[</span><span class="pl-n">zi</span><span class="pl-o">++</span><span class="pl-p">]</span><span class="pl-o">=</span><span class="pl-sc">&#39;*&#39;</span><span class="pl-p">;</span>
                <span class="pl-p">}</span>
                <span class="pl-k">if</span><span class="pl-p">(</span><span class="pl-n">p3</span><span class="pl-o">==</span><span class="pl-mi">1</span><span class="pl-p">){</span>
                        <span class="pl-k">for</span><span class="pl-p">(</span><span class="pl-kt">int</span> <span class="pl-n">j</span><span class="pl-o">=</span><span class="pl-mi">0</span><span class="pl-p">;</span><span class="pl-n">j</span><span class="pl-o">&lt;</span><span class="pl-n">zi</span><span class="pl-p">;</span><span class="pl-n">j</span><span class="pl-o">++</span><span class="pl-p">)</span><span class="pl-n">printf</span><span class="pl-p">(</span><span class="pl-s">&quot;%c&quot;</span><span class="pl-p">,</span><span class="pl-n">z</span><span class="pl-p">[</span><span class="pl-n">j</span><span class="pl-p">]);</span>
                <span class="pl-p">}</span>
                <span class="pl-k">else</span> <span class="pl-k">if</span><span class="pl-p">(</span><span class="pl-n">p3</span><span class="pl-o">==</span><span class="pl-mi">2</span><span class="pl-p">){</span>
                        <span class="pl-k">for</span><span class="pl-p">(</span><span class="pl-kt">int</span> <span class="pl-n">j</span><span class="pl-o">=</span><span class="pl-n">zi</span><span class="pl-o">-</span><span class="pl-mi">1</span><span class="pl-p">;</span><span class="pl-n">j</span><span class="pl-o">&gt;=</span><span class="pl-mi">0</span><span class="pl-p">;</span><span class="pl-n">j</span><span class="pl-o">--</span><span class="pl-p">)</span><span class="pl-n">printf</span><span class="pl-p">(</span><span class="pl-s">&quot;%c&quot;</span><span class="pl-p">,</span><span class="pl-n">z</span><span class="pl-p">[</span><span class="pl-n">j</span><span class="pl-p">]);</span>
                <span class="pl-p">}</span>
        <span class="pl-p">}</span>
        <span class="pl-n">printf</span><span class="pl-p">(</span><span class="pl-s">&quot;</span><span class="pl-se">\n</span><span class="pl-s">&quot;</span><span class="pl-p">);</span>
        <span class="pl-k">return</span> <span class="pl-mi">0</span><span class="pl-p">;</span>
<span class="pl-p">}</span>
</cpde></pre></div>